Patents by Inventor Frans Koster

Frans Koster has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Liquid yeast compositions
    Patent number: 8313785
    Abstract: The present invention provides a composition comprising between 24% and 45% yeast (based on yeast dry matter content) characterized in that it contains more than 0.75% salt; and that the composition is liquid; and that the composition is biologically stable by maintaining the composition below 10° C.
    Type: Grant
    Filed: November 28, 2002
    Date of Patent: November 20, 2012
    Assignee: Lesaffre et Compagnie
    Inventors: Frans Koster, Unno Adrianus De Vreede
  • Liquid yeast compositions
    Publication number: 20050129808
    Abstract: The present invention provides a composition comprising between 24% and 45% yeast (based on yeast dry matter content) characterized in that it contains more than 0.75% salt; and that the composition is liquid; and that the composition is bio-logically stable by maintaining the composition below 10° C.
    Type: Application
    Filed: November 28, 2002
    Publication date: June 16, 2005
    Inventors: Frans Koster, Unno De Vreede
  • Large scale separation and purification of fermentation product
    Patent number: 5445949
    Abstract: A method of separating a hydrophobic fermentation product selected from the group consisting of lipase, esterase, endoxylanase and an antibiotic from a mixture comprising said product and contaminants which method comprises adding to the mixture sequentially(1) 0.5 to 15% (w/v) of a nonionic surfactant,(2) 0.5 to 60 mg of a flocculating agent per gram of said mixture,(3) 1 to 20% (w/v) of an extra nonionic surfactant,(4) a suitable K, Na, NH.sub.4 or Mg salt selected from the group of chlorides, sulfates, acetates, carbonates or phosphates, whereby the concentration of the salt is chosen so as to have the surfactant layer on top and is between 2 and 30%;to obtain a three phase product mixture, separating the product mixture into liquid-liquid-solid fractions and recovering the hydrophobic fermentation product.
    Type: Grant
    Filed: October 20, 1994
    Date of Patent: August 29, 1995
    Assignee: Gist-Brocades N.V.
    Inventors: Frans Koster, Jos J. P. Webbers